CLAS Physics Database

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Measurement E151M810

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Experiment: EG4, 2016

Spokespersons: Xiaochao Zheng

Experiment comment: Final asymmetry results for the ep-> e pi+ (n) channel extracted from CLAS/EG4 data obtained using a longitudinally polarized beam and a longitudinally polarized NH3 target (CAA HS07-02).

No publications available for this experiment

Quantity measured: A_UL,
Target spin asymmetry.
Beam: e, polarization: longitudinal
Target: p (Z=1, A=1), polarization: longitudinal
Final state: π⁺n, polarization: none

Q² :	0.1715 GeV²
W :	1415 GeV
ε :	0.9156
E_beam :	2.2596 GeV
ε_L:	0.3306

Select data slice:
cos(θ_π⁺) =

Observable quantity measured (Y axis): A_UL,
Plot measurement data

Parameter (X axis): φ(π⁺), degrees

Click here to get data in text file, delimited with tabs.

Measured data:

cos(θ_π⁺)	φ(π⁺), degrees	A_UL	Stat. error	Syst. error
0.25	66	0.4919	0.6303	0.0441
0.35	66	0.4536	0.5714	0.0423
0.45	282	0.077	0.5939	0.0304
0.65	90	0.78	0.7216	0.0593
0.65	102	-0.1881	0.6001	0.0324
0.65	114	0.3766	0.5949	0.0389
0.65	246	0.605	0.6399	0.0498
0.65	258	0.6792	0.7065	0.0537
0.65	270	-0.6948	0.6244	0.0546
0.75	90	-0.035	0.5318	0.0301
0.75	102	-0.166	0.5188	0.0319
0.75	114	1.0517	0.6045	0.0753
0.75	126	-0.0211	0.6555	0.03
0.75	222	-0.1014	0.6962	0.0307
0.75	234	-0.0872	0.5959	0.0305
0.75	246	1.6315	0.5876	0.1112
0.75	258	-1.6054	0.4149	0.1095
0.75	270	0.1783	0.6581	0.0322
0.85	78	-0.7721	0.5685	0.0589
0.85	102	0.7655	0.5827	0.0585
0.85	114	-0.8719	0.5289	0.0646
0.85	126	0.7337	0.7472	0.0567
0.85	138	-1.0483	0.601	0.075
0.85	234	1.0348	0.856	0.0742
0.85	246	-1.0524	0.5691	0.0753
0.85	258	1.3047	0.6315	0.0907
0.85	270	-0.3908	0.5454	0.0395
0.85	282	0.3041	0.5121	0.036
0.85	294	0.5076	0.7305	0.0448
0.95	234	-0.121	1.2049	0.031
0.95	246	0.795	1.0172	0.0602
0.95	258	-1.1318	0.8269	0.0801
0.95	270	0.4117	0.9823	0.0404
0.95	282	0.8372	0.8322	0.0626
0.95	294	-0.4083	0.9138	0.0402
0.25	294	-0.9678	0.7125	0.0942
0.35	66	-0.3582	0.9253	0.0446
0.45	78	1.2178	1.0754	0.1163
0.45	294	0.0969	0.8376	0.0313
0.65	102	0.8483	1.093	0.0838
0.65	114	0.2808	1.0213	0.0396
0.65	246	-0.323	0.9499	0.0423
0.65	258	0.2688	0.7381	0.0389
0.75	90	-1.3327	0.9085	0.1266
0.75	102	-1.1491	0.8569	0.1102
0.75	114	-0.2982	0.9613	0.0407
0.75	126	0.5613	1.0708	0.0599
0.75	234	-0.597	0.9095	0.0627
0.75	246	1.32	0.9638	0.1255
0.75	270	-0.9384	0.8434	0.0917
0.85	78	-0.6904	1.2336	0.0704
0.85	102	1.8062	1.1884	0.1694
0.85	114	-0.544	1.1841	0.0585
0.85	126	-0.0224	1.215	0.0301
0.85	234	1.0221	0.9949	0.099
0.85	258	0.5153	0.9524	0.0562
0.85	270	1.117	0.9319	0.1074
0.85	282	-0.3352	0.9855	0.0431
0.95	246	0.8952	3.2529	0.0879
0.95	282	0.1163	2.9622	0.0319